Pulverizing-machine.



W. K. NIX, JR.

PULVERIZING MACHINE.

APPLIOATION FILED JAN. 19, 1909.

935 1 61. v Patented Sept. 28, 1909.

4 SHEETS-SHEET 1.

' lmwm w. NIX, JR. PULVERIZING MACHINE. APPLICATION FILED JAN. 19, 1909.

935,161 Patented Sept. 28, 1909. 7 4 SHEETS-*BHEET 2- a'nuantoz W. K.NIX, JR. PULVERIZING MACHINE. APBLIOATION FILED JAN. 19, 1909 935,161Patented Sept. 28, 1909. 4 SHEETS-SHEET 3.

W. K. NIX, JR. PULVERIZING MACHINE.

APPLICATION FILED JAN. 19, 1909.

Patented Sept. 28, 1909.

4 SHEIBT8-SHEET 4.

Snvenfoz iWitnmoeo WILLIAM K. NIX, J'BL, OF ATLANTA, GEORGIA.

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specification of Letters Patent.

Patented Sept. 28, 1909.

Application filed Eanuary 19, 1909. Serial No. 473,195.,

To all whom it may concern:

Be it known that 1, WILLIAM K. Nix, J r., a citizen of the UnitedStates, residing at Atlanta, in the county of Fulton and State ofGeorgia, have invented certain new and useful Improvements in Pulver1z1n-Machines; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it apperltains to make and use the same.

My invention relates to certain improvements in pulverizing machines,and has to do particularly with that type of machine tached to theunderside of the table 11 are a which is employed for reducingrock,stone or other material to a finely divided condition,.after it hasfirst been broken by a crusher of any suitable form. The object of myinvention is to provide a machine of the character described which shallafford simplicity, durability, and-at once, efficiency ofoperation.

Withthese several objects'in view, my improved machine, in its preferredform, includes the combination and arrangement of parts now about to bedescribed in detail, and which are pointed out more fully in theappended claims, and disclosed in the accompanymg drawings which shouldbe read in connection with the specification hereinafter.

In the drawings, Figure 1 is a vertical section of a machine embodyingmy several improvements; Fig. 2 is a horizontal section on the line B Bof Fig. 1. Fig. 3 is aview in side elevation; Figs. 4c and 5- are detailviews showing the novel means which I employ for fastening together thesections of the outside casing; and Fig. 6 is a top. plan view of themachine.

Referring moreparticularly to the draw- 1ngs,,1n which l1ke referencecharacters refer I to corresponding parts in the several views, 1designates the base of the machine, which is provided with a pluralityof openings 2 for a purpose to be mentioned presently.

Bolted or otherwise secured to the base 1 is acone-shaped casting 3-,the upper surface of which is roughened in any suitable manner, and.preferably corrugated after the fashion of a mill-stone.

4 designates the legs which are positioned upon and secured to the baselby bolts or other suitable fastening devicw, and to which in turn isbolted the cover-plate 5.

The cover-plate 5 carries a series of vertically arranged webs 6 and acentrally arranged sleeve 7 within which is positioned a brass bushing 9designates openings in the cover-plate adjacent the sleeve 7 andarranged between the aforementioned webs 6;

Mounted centrally of thecover-plate 5, and within the bushing 8, is ahollow shaft 10, which carries at itslower end the table 11. It is to benoted'that the table 11 is attached to the'shaft .10 by means of featherkeys 12, so as to permit vertical movement of the table 11 relative totheshaft 10, during rotation of these parts together. At-

plates 13 cooperate with the previously described casting 3 toconstitute a cone-shaped grinding surface. The plates 13 are roughenedorcorrugated, and movable independently of one another, being secured tothe table .11 by means of bolts or other fastening means. I I

Formed integralwith the table 11 are the curved extensions 14 whichconstitute seats or recesses for the balls 15, constructed of anysuitable but very heavy material. Openings 16 are provided in theextensions 14 fora purpose about tobe mentioned. Secured at the outside,to, the table 11 are plows 17. w Mounted upon theshaft 10 is the hub 18of a'gear-wheel 19, which is arranged to engage with anadditionalgear-wheel 20 mounted on the horizontal shaft 21, and driven by a pulley22.

23 is a circular hollow casting positioned above the hub 18 and securedthereto.

24 is a rectangular plate which is attached to shoulders provided withinthe casting 23. Mounted upon the plate 24:, and formedintegrally-therewith, is a squared socket 25 which is adapted to receivethe squared end of the shaft 26. The other end-0f said shaft is formedround, and rotates within a bearing 27, formed in the casing 28 Thecasing 28 is formed with a hopper 29, within which is mounted a gate 30,for controlling the feed of the material to the machine. Secured to athe gate 30 is a screw-threaded stem 31 which passes through a bracket32, and is adjusted by means of the nuts 33. The bracket 32 is fastenedto a part of the casing 28 constituting aside-0f. the hopper. Mountedupon the shaft 26 are a series of flights, so as to feather keys herein)form a feed conveyer for the material to be I pulverized.

34 are standards secured to the casing 28, and mounted upon thecover-plate 5. These standards 34 constitute the support for thefeeding-mechanism.

35 is'a lubricating cup which connects by means of a pi e 36 with thebushing 8, and serves to keep the shaft 10 and other parts properlyoiled.

In order to lubricate the horizontal shaft 21, I provide ring oilinboxes 37 and 38 respectivel the outer 0 which is secured to one of tlielegs 4, the inner one being fastened to one of the webs 6 of thecoverplate 5.

The material having first been broken in a rock crusher,'it is fed intothe hopper 29 at the top of the machine, from which it passes to thevertical conveyer in the casing 28. As already stated, the amount ofmaterial admitted to the conveyer is controlled by adjustment of thesliding gate 30. The material then passes down through the conveyer andinto the hollow shaft 10, from which it falls onto the cone-shapedcasting 3, being ground between such casting and the grinding surfaces13. The direction of-rotation of the grinding table 11 is indicated bythe arrows in Fig. 2. The action of the cone formed by the casting 3 andthe surfaces 13 prepares the material for the final grinding which takesplace between the lower part of thevcasting 3 and the heavy balls 15,which pass over the material as it reaches the bottom of the grindingcone. Any material which may stick to the balls is ground between themand the table 11 which carries them, and comes out in the form of a dustsufficiently fine to passout through a wire screen 39, which surroundsthe grinding table 11, and extends from the base 1 to the cover-plate 5.A part of the ground material passes out at the bottom of the grindingtable, while a portion of it comes out through the openings 16 alreadymentioned. Any material which passes the balls 15, and is not fineenough to go through the screen 39, is thrown back by the lows 17already described, and is ground su ciently.

The sliding connection already explained, is provided between the hollowshaft 10 and the grinding table 11, so that in the event that thematerial passing down through the shaft 10 is very large, or too hard tobe ground immediately, the table may raise slightly on .the shaft (bymeans of the and thus prevent possible damage or breakage to any of thearts.

After the finely ground material is passed through the openings 2 in thebase and into a hopper which takes it to a suitable conveyer andelevator.

' vided with a- Fans 40 are provided,'be ing supportedby brackets 41which are secured-to the grinding table 11, said fans serving to createa draft throu h the openings 9, and thereby throw the finely groundmaterial against the screen 39, as it comes from beneath the grindingtable 11. A brush 42 is secured to the grinding table by means of abracket 43 and engages the screen 39', so that if the material is moistand has a tendency to clog up the openings in the screen, it will, ateach revolution of the table, pass over the screen and remove any suchmaterial.

44 designates the casing surrounding the screen 39, to prevent escape ofany of the ground material. The casing 44 is made preferably in fourparts and is fastened to the legs 4 by the attaching device shown fullyin Figs. 4 and 5. 46 and 47 are the ends of two casing sectionsrespectively, the other ends of said sections being secured in thereverse manner. The end 47 is held in position by engagement with thepin 48. The end 46 of the other casing section has secured thereto anangle iron 49, which is adapted to be engaged by a cam 50. The cam50'is'prohand-lever 51, and is pivotally mounted upon a link 52. Thebottom portion of the link 52 is bifurcated and arranged at right-anglesto the part which carries the cam 50. 53 is an eye-bolt mounted upon theweb of the leg 4, and adjustable by means of the nut 54. The link 52 ispivoted to the eye-bolt 53 by means of the bifurcated portion alreadymentioned, and is thus mounted so as to have a horizontal move ment'away from the'casing sections 46 and 47, when it is desired to removethem. 55 is rubber, felt, or other suitable material positioned betweenthe casing sections and the flanges of the legs 4, and along therecesses in the base 1 and cover-plate 5, for the purpose of securingdust-proof connections throughout.

The construction which I have here described embodies only one form ofmy machine, but I desire it to be understood that various modificationsmay be adopted, and other arrangements of the co'iiperating parts may behad without departing from the spirit and essential features of myimprovement. I

' What I claim and'desire to secure by Letters-Patent is: I

l. A pulverizing machine of the character described including a basehaving a coneshaped grinding surface, a hollow rotating shaft fixedagainst vertical movement, a table keyed to said shaft and havingvertical movement thereon, a series of segmenta grinding sectionsattached to the table, an extension adjacent said grinding sections,

and a plurality of grinding balls supported described including a basehaving a coneshaped grinding surface, a hollow rotating shaft, a tablekeyed to said shaft and having vertical movement thereon, a plurality ofsegmental grinding sections attached to said table, an extension on thetable adjacent said grinding sections, a series of grinding ballsarranged for movement in said extension, and plows secured to the tableat points exterior to the grinding balls,

3. A pulverizing machine of the character described including a basehaving a cone shaped grinding surface, a hollow rotating shaft, a tablekeyed to said shaft and having vertical movement thereon, a series ofsegmental grinding sections attached to said table, an extensionadjacent said grinding sections and provided with a series of openings,a plurality of balls mounted for move ment in said extension and underthe aforesaid openings, and plows attached to the table at pointsexterior to the grinding balls.

4. A pulverizing machine of the character described including a base, agrinding table, a cover-plate above the grinding table, legs secured tothe base and supporting said coverplate, a sectional casing surroundingthe grinding table, and instrumentalities for securing the sections ofsaid casing to the aforementioned legs, the same consisting of means forattaching one end of a section, an angle-iron attached to the other endof the section, and instrumentalities for holding said angle-iron inengagement with its respective leg.

5. A pulverizing machine of the character described including a base, agrinding table, a cover-plate above the grinding table, legs secured tothe base and supporting said coverplate, a sectional casing surroundingthe grinding table, and instrumentalities for securing the sections ofsaid casin to the aforementioned legs, the same consisting of means forattaching one end of a section, an angle-iron attached to the other endof the section, and cam-operative means for: drawing said angle-ironagainst its respective leg.

6. A pulverizing machine of the character described including a basehaving a coneshaped grinding surface, a hollow rotating shaft, agrinding table keyed to said shaft and movable vertically thereon, acasing above the shaft, a conveyer arranged within the casing andadapted to rotate with the shaft, a hopper connected with the casing,and a vertically sliding adjustable gate for controlling the feed fromthe hopper.

7. A pulverizing machine of the character described including a basehaving a coneshaped grinding surface, a hollow rotating shaft, a tablekeyed to said shaft and movable vertically thereon, a casting attachedto the upper end of said hollow shaft, a rectangular bar carried by saidcasting and having a squared socket, a shaft mounted in said socket, aconveyer carried by said shaft, a

casing inclosing the conveyer and provided with a hopper leadingthereto, and a vertically sliding adjustable gate for controlling thefeed from the hopper.

8. A pulverizing machine of the character described including a base, agrinding table rotatably mounted thereon, a cover-plate positioned abovethe grinding table, legs connecting the cover-plate and said base, asectional casing surrounding the grinding table, and instrumentalitiesfor securing the sections of the casing to said legs, suchinstrumentalities including a pin secured to the leg, an eye-boltadjustably attached to the web of the leg, a link pivotally secured tosaid eye-bolt, and a cam operatively connected to said link.

9. A pulverizing machine of the character described including a casingsection, an angle-iron attached to said casing section, a leg, aneye-bolt adjustably attached to the web of said leg, a. link pivotallysecured to the eye-bolt, a cam o-peratively attached to said link andarranged to engage the aforementioned angle-iron, and a hand-levercarried by said cam.

In testimony whereof, I aflix my signature, in the presence of twosubscribing witnesses.

WILLIAM K. NIX, JR.

Witnesses:

J. H. D. BRUNING, TRACY G. HUNTER.

